add none-fixed font support.

git-svn-id: https://rt-thread.googlecode.com/svn/trunk@961 bbd45198-f89e-11dd-88c7-29a3b14d5316

components/rtgui/SConscript

@@ -20,6 +20,7 @@ common/image.c
 common/image_xpm.c
 common/image_hdc.c
 common/font.c
+common/font_bmp.c
 common/font_hz_file.c
 common/font_hz_bmp.c
 common/asc12font.c

components/rtgui/common/asc12font.c

@@ -211,6 +211,8 @@ const rt_uint8_t asc12_font[] = {
 const struct rtgui_font_bitmap asc12 =
 {
 	asc12_font, 		/* bmp */
+	RT_NULL,			/* each character width, NULL for fixed font */
+	RT_NULL,			/* offset for each character */
 	6, 					/* width */
 	12, 				/* height */
 	0, 					/* first char */

components/rtgui/common/asc16font.c

@@ -276,6 +276,8 @@ const unsigned char asc16_font[] = {
 struct rtgui_font_bitmap asc16 =
 {
 	(const rt_uint8_t*)asc16_font, 		/* bmp */
+	RT_NULL,			/* each character width, NULL for fixed font */
+	RT_NULL,			/* offset for each character */
 	8, 					/* width */
 	16, 				/* height */
 	0, 					/* first char */

components/rtgui/common/font.c

@@ -156,75 +156,3 @@ void rtgui_font_get_metrics(struct rtgui_font* font, const char* text, rtgui_rec
 		rt_memset(rect, 0, sizeof(rtgui_rect_t));
 	}
 }
-
-static void rtgui_bitmap_font_draw_text(struct rtgui_font* font, struct rtgui_dc* dc, const char* text, rt_ubase_t len, struct rtgui_rect* rect);
-static void rtgui_bitmap_font_get_metrics(struct rtgui_font* font, const char* text, rtgui_rect_t* rect);
-struct rtgui_font_engine bmp_font_engine =
-{
-	RT_NULL,
-	RT_NULL,
-	rtgui_bitmap_font_draw_text,
-	rtgui_bitmap_font_get_metrics
-};
-
-void rtgui_bitmap_font_draw_char(struct rtgui_font_bitmap* font, struct rtgui_dc* dc, const char ch,
-	rtgui_rect_t* rect)
-{
-	const rt_uint8_t* font_ptr;
-	rt_uint16_t x, y, h;
-	register rt_base_t i, j, k, word_bytes;
-
-	/* check first and last char */
-	if (ch < font->first_char || ch > font->last_char) return;
-
-	x = rect->x1;
-	y = rect->y1;
-	word_bytes = (((font->width - 1) / 8) + 1);
-
-	font_ptr = font->bmp + (ch - font->first_char) * word_bytes * font->height;
-
-	h = (font->height + y > rect->y2) ? rect->y2 - rect->y1 : font->height;
-
-	for (i = 0; i < h; i++)
-	{
-		for (j = 0; j < word_bytes; j++)
-		{
-			for (k = 0; k < 8; k++)
-			{
-				if (((font_ptr[i * word_bytes + j] >> (7 - k)) & 0x01) != 0)
-				{
-					/* draw a pixel */
-					rtgui_dc_draw_point(dc, k + 8 * j + x, i + y);
-				}
-			}
-		}
-	}
-}
-
-static void rtgui_bitmap_font_draw_text(struct rtgui_font* font, struct rtgui_dc* dc, const char* text, rt_ubase_t len, struct rtgui_rect* rect)
-{
-	struct rtgui_font_bitmap* bmp_font = (struct rtgui_font_bitmap*)(font->data);
-
-	RT_ASSERT(bmp_font != RT_NULL);
-
-	while (len-- && rect->x1 < rect->x2)
-	{
-		rtgui_bitmap_font_draw_char(bmp_font, dc, *text, rect);
-
-		/* move x to next character */
-		rect->x1 += bmp_font->width;
-		text ++;
-	}
-}
-
-static void rtgui_bitmap_font_get_metrics(struct rtgui_font* font, const char* text, rtgui_rect_t* rect)
-{
-	struct rtgui_font_bitmap* bmp_font = (struct rtgui_font_bitmap*)(font->data);
-
-	RT_ASSERT(bmp_font != RT_NULL);
-
-	/* set metrics rect */
-	rect->x1 = rect->y1 = 0;
-	rect->x2 = bmp_font->width * (rt_int16_t)rt_strlen((const char*)text);
-	rect->y2 = bmp_font->height;
-}

components/rtgui/common/font_bmp.c

@@ -0,0 +1,118 @@
+/*
+ * File      : font.c
+ * This file is part of RT-Thread RTOS
+ * COPYRIGHT (C) 2006 - 2010, RT-Thread Development Team
+ *
+ * The license and distribution terms for this file may be
+ * found in the file LICENSE in this distribution or at
+ * http://www.rt-thread.org/license/LICENSE
+ *
+ * Change Logs:
+ * Date           Author       Notes
+ * 2010-09-15     Bernard      first version
+ */
+#include <rtgui/font.h>
+#include <rtgui/dc.h>
+
+/* bitmap font private data */
+
+static void rtgui_bitmap_font_draw_text(struct rtgui_font* font, struct rtgui_dc* dc, const char* text, rt_ubase_t len, struct rtgui_rect* rect);
+static void rtgui_bitmap_font_get_metrics(struct rtgui_font* font, const char* text, rtgui_rect_t* rect);
+const struct rtgui_font_engine bmp_font_engine =
+{
+	RT_NULL,
+	RT_NULL,
+	rtgui_bitmap_font_draw_text,
+	rtgui_bitmap_font_get_metrics
+};
+
+void rtgui_bitmap_font_draw_char(struct rtgui_font_bitmap* font, struct rtgui_dc* dc, const char ch,
+	rtgui_rect_t* rect)
+{
+	const rt_uint8_t* font_ptr;
+	rt_uint16_t x, y, h;
+	register rt_base_t i, j, k, word_bytes;
+
+	/* check first and last char */
+	if (ch < font->first_char || ch > font->last_char) return;
+
+	x = rect->x1;
+	y = rect->y1;
+	/* get width */
+	if (font->char_width == RT_NULL)
+	{
+		word_bytes = (((font->width - 1) / 8) + 1);
+		font_ptr = font->bmp + (ch - font->first_char) * word_bytes * font->height;
+	}
+	else
+	{
+		word_bytes = ((font->char_width[ch - font->first_char] - 1)/8) + 1;
+		font_ptr = font->bmp + font->offset[ch - font->first_char];
+	}
+
+	h = (font->height + y > rect->y2) ? rect->y2 - rect->y1 : font->height;
+
+	for (i = 0; i < h; i++)
+	{
+		for (j = 0; j < word_bytes; j++)
+		{
+			for (k = 0; k < 8; k++)
+			{
+				if (((font_ptr[i * word_bytes + j] >> (7 - k)) & 0x01) != 0)
+				{
+					/* draw a pixel */
+					rtgui_dc_draw_point(dc, k + 8 * j + x, i + y);
+				}
+			}
+		}
+	}
+}
+
+static void rtgui_bitmap_font_draw_text(struct rtgui_font* font, struct rtgui_dc* dc, const char* text, rt_ubase_t len, struct rtgui_rect* rect)
+{
+	struct rtgui_font_bitmap* bmp_font = (struct rtgui_font_bitmap*)(font->data);
+
+	RT_ASSERT(bmp_font != RT_NULL);
+
+	while (len-- && rect->x1 < rect->x2)
+	{
+		rtgui_bitmap_font_draw_char(bmp_font, dc, *text, rect);
+
+		/* move x to next character */
+		if (bmp_font->char_width == RT_NULL)
+			rect->x1 += bmp_font->width;
+		else
+			rect->x1 += bmp_font->char_width[*text - bmp_font->first_char];
+		text ++;
+	}
+}
+
+static void rtgui_bitmap_font_get_metrics(struct rtgui_font* font, const char* text, rtgui_rect_t* rect)
+{
+	struct rtgui_font_bitmap* bmp_font = (struct rtgui_font_bitmap*)(font->data);
+
+	RT_ASSERT(bmp_font != RT_NULL);
+
+	if (bmp_font->char_width != NULL)
+	{
+		rt_uint32_t index;
+
+		/* set metrics rect */
+		rect->x1 = rect->y1 = 0;rect->x2 = 0;
+		rect->y2 = bmp_font->height;
+
+		/* get width for each character */
+		while (*text)
+		{
+			rect->x2 += bmp_font->char_width[*text - bmp_font->first_char];
+			text ++;
+		}
+	}
+	else
+	{
+		/* set metrics rect */
+		rect->x1 = rect->y1 = 0;
+		rect->x2 = bmp_font->width * (rt_int16_t)rt_strlen((const char*)text);
+		rect->y2 = bmp_font->height;
+	}
+}

components/rtgui/common/hz12font.c

@@ -12275,6 +12275,8 @@ const unsigned char hz12_font[] = {
 const struct rtgui_font_bitmap hz12 =
 {
 	hz12_font, 			/* bmp */
+	RT_NULL,			/* each character width, NULL for fixed font */
+	RT_NULL,			/* offset for each character */
 	12, 				/* width */
 	12, 				/* height */
 	0, 					/* first char */

components/rtgui/common/hz16font.c

@@ -16733,6 +16733,8 @@ const unsigned char hz16_font[] = {
 const struct rtgui_font_bitmap hz16 =
 {
 	hz16_font, 			/* bmp */
+	RT_NULL,			/* each character width, NULL for fixed font */
+	RT_NULL,			/* offset for each character */
 	16, 				/* width */
 	16, 				/* height */
 	0, 					/* first char */
@@ -16746,7 +16748,7 @@ struct rtgui_font rtgui_font_hz16 =
 	16, 				/* height */
 	1, 					/* refer count */
 	&hz_bmp_font_engine,/* font engine */
-	(void *)&hz16,				/* font private data */
+	(void *)&hz16,		/* font private data */
 };
 
 /* size = 267616 bytes */

components/rtgui/include/rtgui/font.h

@@ -35,19 +35,19 @@ struct rtgui_font_engine
 /*
  * bitmap font engine
  */
-/* bitmap font private data */
-struct rtgui_font_bitmap
-{
-	/* bitmap data */
-	const rt_uint8_t* bmp;
-
-	rt_uint16_t width;
-	rt_uint16_t height;
-
-	rt_uint8_t first_char;
-	rt_uint8_t last_char;
+struct rtgui_font_bitmap
+{
+	const rt_uint8_t*  bmp;			/* bitmap font data */
+	const rt_uint8_t*  char_width;	/* each character width, NULL for fixed font */
+	const rt_uint32_t* offset;		/* offset for each character */
+
+	rt_uint16_t width;				/* font width  */
+	rt_uint16_t height;				/* font height */
+
+	rt_uint8_t first_char;
+	rt_uint8_t last_char;
 };
-extern struct rtgui_font_engine bmp_font_engine;
+extern const struct rtgui_font_engine bmp_font_engine;
 
 #include <rtgui/tree.h>
 SPLAY_HEAD(cache_tree, hz_cache);
@@ -87,7 +87,7 @@ struct rtgui_font
 	rt_uint32_t refer_count;
 
 	/* font engine */
-	struct rtgui_font_engine* engine;
+	const struct rtgui_font_engine* engine;
 
 	/* font private data */
 	void* data;